Data Scientist (Remote)

CrowdStrike Holdings, Inc.

Job Overview

Location

USA - Remote

Job Type

Full-time

Full Job Description

📋 Description

• Work at the intersection of Artificial Intelligence and Threat Research to build next-generation agentic systems for cybersecurity.
• Collaborate with cybersecurity subject-matter experts to understand analyst workflows and security operations procedures.
• Post-train large language models (LLMs) and AI agents using supervised fine-tuning and reinforcement learning techniques including RLHF, RLAIF, PPO, GRPO, and DPO.
• Design and implement AI agent architectures featuring planning loops, reasoning, tool and function calling, retrieval systems, and memory management.
• Research and prototype state-of-the-art agentic planning methods from academic literature to enhance system performance.
• Establish objective, statistically rigorous benchmarking frameworks for agentic systems using evals, LLM-as-judge pipelines, and trajectory-level metrics.
• Optimize prompts and inference strategies to maximize model efficiency and output reliability on real-world security tasks.
• Partner with Engineering, Data Science, and Managed Services teams to transition prototypes into production-grade systems.
• Track advancements in AI research and help identify, define, and prioritize new areas for innovation in agentic systems.
• Maintain reproducible research engineering practices using clean Python and disciplined experiment tracking for team-wide collaboration.
• Work independently on ambiguous, complex objectives while communicating clearly within cross-functional teams.

🎯 Requirements

• Excellent foundations in machine learning, probability, and statistics with strong instincts for uncertainty, variance, and experimental design
• PhD-level depth of understanding in modern machine learning research, including ability to read, critique, implement, and improve upon current papers
• Experience training generative models with command of LLM fundamentals: architecture, optimization, tokenization, data, and scaling behavior
• Core expertise in reinforcement learning and post-training: RLHF/RLAIF, policy optimization (PPO/GRPO/DPO), reward modeling, and building RL environments for agents
• Experience building agentic systems: ReAct, planning, reflection, tool/function calling, and retrieval/memory/context management
• Fluency with GPUs, PyTorch, and the LLM training/serving stack (Hugging Face Transformers/TRL/PEFT, DeepSpeed/FSDP, vLLM/TGI/SGLang)
• Strong, reproducible research engineering skills with disciplined Python and experiment tracking

🏖️ Benefits

• Market leader in compensation and equity awards
• Comprehensive physical and mental wellness programs
• Competitive vacation and holidays for recharge
• Paid parental and adoption leaves
• Professional development opportunities for all employees regardless of level or role
• Employee Networks, geographic neighborhood groups, and volunteer opportunities to build connections

Skills & Technologies

Python

React

PyTorch

Data Science

Remote

$120k-180k

Degree Required

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CrowdStrike Holdings, Inc.

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About CrowdStrike Holdings, Inc.

CrowdStrike Holdings, Inc. provides cloud-delivered cybersecurity through the Falcon platform, combining next-generation antivirus, endpoint detection and response, threat hunting, and IT hygiene. Its AI-driven analytics correlate trillions of events weekly to identify malware-free intrusions, nation-state actors, and insider threats across endpoints, workloads, and identities. The company sells subscriptions, professional services, and threat intelligence to enterprises worldwide.

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